Like a huge orange tongue that Gene Simmons of KISS would be envious of, the  protective boom was rolled out across Los Cristianos port to start a Monday morning contamination simulation excercise. A drone hovered over one of the small fishing boats in attendance as a sprinkling of sun bathers settled on the old beach just yards away.

Los Cristianos is a busy port and recent strengthening of the harbour wall showed the ongoing commitment to safety. This was still a working day, the Armas Taburiente ferry slowly glided in just beyond the port building and disgorged its foot and car passengers from the nearest of the Canary Islands. The local TV outlets gathered on the roof of the building but I settled on the terrace of the El Teatro cafe with my coffee.

As the boom spooled out to encircle a large section of the docking area, it left a large yellow cotton reel empty on the dock. The boom was pulled out into position to protect what would be a safety zone. Thankfully there was no danger involved, even the stacked boxes of crisps made it uncrunched onto the Armas ferry. OK it wasn´t exactly Thunderbirds but, practice now will help to ensure perfect arrangements in the unlikely event of a real spill.

The main operation took nearly an hour but I couldn´t help wondering how long it would take to rewind that tongue back onto the spool. It was a different way for me to spend a leisurely hour, but as a regular sea swimmer, it was reassuring to see that all was ship shape.